#!/usr/bin/env node
/**
 * compile-contracts.mjs — compiles CashScript sources to artifact JSON.
 *
 * Uses the cashscript SDK's compileFile. Output goes to contracts/dist/.
 * Run after editing any contracts/*.cash source.
 */
import { readdirSync, readFileSync, writeFileSync, mkdirSync, existsSync } from 'node:fs';
import { join } from 'node:path';

const ROOT = join(import.meta.dirname, '..');
const SRC = join(ROOT, 'contracts');
const OUT = join(SRC, 'dist');

// The trust-critical D-3 module (src/verify/canonical.ts) imports the canonical
// templates as embedded JSON (so it runs in browsers/WebViews with no fs). Those
// embedded copies MUST NOT drift from the compiled source, so we mirror them here
// on every compile. Keep this list in lockstep with the imports in canonical.ts.
const EMBED = join(ROOT, 'src', 'verify', 'artifacts');
const EMBEDDED = new Set([
  'DeviantOpenMintFT.json',
  'DeviantOpenMintNBA.json',
  'DeviantManagedMintFT.json',
  'KatalogosRegistryV1.json',
  'DeviantBondingCurveFT.json',
  'DeviantEscFeeSupply.json',
  'DeviantDescFeeSupply.json',
  'OpenTote.json',
  'ParimutuelToteOpen.json',
  'ParimutuelToteOpenMBA.json',
  // Phase G.1 — voting-system canonical templates (snapshot 0127+; §6.15 roadmap).
  'CitizenToken.json',
  'EndorsementCovenant.json',
  'RegistryState.json',
  'ApplicationCovenant.json',
  'ApplicationCovenantB.json',
  'ApplicationCovenantC.json',
  'ApplicationCovenantD.json',
  'ApplicationCovenantE.json',
  'BallotCovenant.json',
  'ElderFreezeAction.json',
  'ComplaintCovenant.json',
]);

if (!existsSync(OUT)) mkdirSync(OUT, { recursive: true });
if (!existsSync(EMBED)) mkdirSync(EMBED, { recursive: true });

async function main() {
  // CashScript 0.12 split the compiler into a separate `cashc` package.
  // The SDK package (`cashscript`) is runtime-only and no longer exports
  // compileFile.
  let compileFile;
  try {
    ({ compileFile } = await import('cashc'));
  } catch {
    console.error('cashc not installed. Run `npm install` first.');
    process.exit(1);
  }

  const sources = readdirSync(SRC).filter((f) => f.endsWith('.cash'));
  if (sources.length === 0) {
    console.log('No .cash sources found in contracts/');
    return;
  }

  for (const src of sources) {
    const srcPath = join(SRC, src);
    // Skip contracts marked SUPERSEDED or EXPECTED-COMPILE-FAIL in their header
    // comments. Convention for files we keep on disk as reference (SUPERSEDED) or
    // as deliberate negative artifacts that document a Script limitation
    // (EXPECTED-COMPILE-FAIL) but should not break the build.
    const header = readFileSync(srcPath, 'utf8').slice(0, 600);
    const skipMatch = /SUPERSEDED|EXPECTED-COMPILE-FAIL/.exec(header);
    if (skipMatch) {
      console.log(`skipped ${src} (marked ${skipMatch[0]})`);
      continue;
    }
    try {
      const artifact = compileFile(srcPath);
      const jsonName = src.replace(/\.cash$/, '.json');
      const json = JSON.stringify(artifact, null, 2);
      const outPath = join(OUT, jsonName);
      writeFileSync(outPath, json);
      console.log(`compiled ${src} -> ${outPath}`);
      // Mirror canonical templates into the embedded D-3 copy (see EMBED above).
      if (EMBEDDED.has(jsonName)) {
        writeFileSync(join(EMBED, jsonName), json);
        console.log(`  embedded ${jsonName} -> ${join(EMBED, jsonName)}`);
      }
    } catch (err) {
      console.error(`FAILED ${src}:`, err.message);
      process.exitCode = 1;
    }
  }
}

main();